# The line below tells the system to use /bin/bash as the interpreter aka the program that executes the code
#!/bin/bash

# The line below is variable called TODAYS_DATE	that was assigned the output of the command to the right of the '='
# Today, that variable would be 20180524. Tomorrow it would be 20180524. date is a system command that gets the current date info
# If you see backquotes '`', it means whatever is inside the backquotes will be executed as system commands

TODAYS_DATE=`date +%Y%m%d`

# For loop structure. It might be easier to read right to left. The word 'file' is a variable in the for loop structure that will contain a file everytime the loop loops
# This is saying, find every file in the path /var/log, and for every file, see if the file(ie filename) contains todays date.
# If the filename contains todays date, print the filename with the echo command. echo just prints to the screen
# cat prints the contents of a file to the terminal. But i am using the '|' symbol which takes the output from the previous command
# so that it can continue manipulating the output. grep is a command that will search a file, and tail will output the last lines.
# That line is printing out all the lines of the file, will search for all lines that contain the word 'kernel' and return only those lines, and then print out the last 10 lines that was left
# and the file status (the stat command) prints the modified,access, and some other info to the shell/terminal

for file in `find /var/log`
do
        if [[ $file =~ $TODAYS_DATE ]]
        then
				echo $file
                cat $file | grep kernel | tail -n 10
                stat $file
        fi
done